- the condition in human beings of having a high amount of melanin granules in the skin, hair, and eyes.
- the condition in which an unusually high concentration of melanin occurs in the skin, plumage, or pelage of an animal.
- the condition in man and animals of having dark-coloured or black skin, feathers, etc. Industrial melanism is the occurrence of dark varieties of animals, esp moths, in smoke-blackened industrial regions, in which they are well camouflaged
- another name for melanosis
